Plato, Laws 951a

δοκεῖν, τοῖς περὶ τὸν πόλεμον ἀντίστροφον ἀποδιδόντες δόξης παρασκευήν, ἐλθόντες δὲ οἴκαδε διδάξουσι τοὺς νέους ὅτι δεύτερα τὰ τῶν ἄλλων ἐστὶ νόμιμα τὰ περὶ τὰς πολιτείας. θεωροὺς δὲ ἄλλους ἐκπέμπειν χρεὼν τοιούσδε τινὰς τοὺς νομοφύλακας παρεμένους· ἄν τινες ἐπιθυμῶσι τῶν πολιτῶν τὰ τῶν ἄλλων ἀνθρώπων πράγματα θεωρῆσαι κατά τινα πλείω σχολήν, ἀπειργέτω μηδεὶς τούτους νόμος. οὔτε

a glorious repute that will rival that of its warriors; and these men, when they return home, will teach the youth that the political institutions of other countries are inferior to their own. Also, they ought to send out other inspecting commissioners (when they have obtained leave from the Law-wardens) of the following kind:—If any of the citizens desire to survey the doings of the outside world in a leisurely way, no law shall prevent them;